Ltjke vander veeii newton



UNITE STATES PTE FTSE.

LUKE VANDER VEER NEVTON, OF NE\V YORK, N. Y.

PREPARING THE FACE OF METALLIC TYPES, ENGRAVED PLATES, &C.

Specication of Letters Patent No. 7,581, dated August 20, 1850.

To all whom t may concern:

Be it known that I, LUKE V. V. NEWTON, of New York, in the county of New York and State of New York, have discovered a new and useful Improvement in the Manufacture of Printing Type and its Materials; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the annexed drawing making a part of this specification, in which the ligure is a representation of one of my improved types.

The nature of my discovery consists in a new method of coat-ing the wearing surfaces of ordinary printing types, stereotype plates, and other plates whether engraved or cast, so as greatly to prolong the wear of said types and plates in the process of printing, or taking impression from them.

This object I attain by plating the surface of the type, stereotype plate, picture cut or other device on those parts which are subject to the act-ion of t-he printing press, with ametal more durable than the type.v plate, &c., is itself composed of, and the means I employ to effect this object is galvanic electricity.

In the manufacture of these type, I employ the well known galvanic battery, and the metal I prefer to plate t-he types, &c., with is copper.

The battery being in readiness a solution of a/salt of copper (if that metal is chosen for the purpose) is put in the proper cell of the battery and the depositing of the metal itself on the surface of the type or stereotype plates is thence effected as usual.

In order the more readily to accomplish this result I bind a number of type together is masses of convenient size for operating with, thoroughly cleansing their face, after which I immerse them in the solution of the salt of copper as deep as the shoulder of the shank, voltaic electricity being then applied for decomposing the salt and depositing t-he metal on the face of the type as shown in the drawing.

IVhat I claim as my invention and discovery and desire to secure by Letters Patent is- The plating or coating of the surfaces of metallic printing types stereotype plates or other printing plates whether cast or engraved, with an additional coat of metal by means of galvanic electricity in the manner and for the purpose described.

L. VANDER VEER NEWTON.

Titnessesz JOSEPH P. PIRssoN, S. I-I. MAYNARD. 

